Service

SparkPlatform

SimpleSparkStore

spark

Sink

SparkPlatform

Source

SparkPlatform

SparkPlatform

spark

SparkService

spark

SparkSink

spark

SparkSource

spark

SparkStore

spark

Store

SparkPlatform

snapshot

SimpleSparkStore

spark

summingbird

sumBeforeMerge

MergeResult

summingbird

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